Eurorack Reference / modules /erica-synths/black-sequencer audit site v0.1 — milestone 3
erica-synths/black-sequencer

Black Sequencer

Erica Synths

4-channel CV/gate/modulation sequencer with up to 64 steps per pattern, song mode, built-in quantizer, per-step probability/ratchet/glide/shuffle, LFOs, envelope generators, MIDI I/O, and SD card storage.623

Capabilities 4

CV Sequencer (Chain)cv-sequencer
4-channel CV/gate/mod sequencer with up to 64 steps per pattern, per-track length/direction/division, built-in quantizer, song mode, and SD card storage623
Clock Sourceclock-source
Outputs analogue clock (1/2/4 ppq configurable) and MIDI clock; can slave to external analogue clock (default 4ppq) or MIDI clock (24ppq)623
MIDI I/Omidi-io
3.5mm TRS MIDI IN and OUT; transmits note on/off, clock, start/stop, and CC for modulation CV; also acts as MIDI-CV converter in THROUGH mode623
Quantizerquantizer
Per-channel input and output quantizer with preset and user-designed scales; supports microtonal tuning623

Jacks 21 — 6 in / 15 out

NameSignalVoltageDescription
Inputs (6)
CLK INclock—623
CV INcv—Configurable CV input; can be routed to alter CV outputs via FILL, ADDFILL, ADD, or THROUGH modes623
GATE INgate—623
MIDI INmixed—623
MOD INcv—623
RST INtrigger—623
Outputs (15)
CLK OUTclock—623
CV1cv—V/oct CV output for channel 1623
CV2cv—623
CV3cv—623
CV4cv—623
GATE1gate—623
GATE2gate—623
GATE3gate—623
GATE4gate—623
MIDI OUTmixed—623
MOD1mixed—Configurable modulation output for channel 1; can output stepped CV, slided CV, decay/ASR/ADSR envelopes, LFO, per-step LFO, or triggers623
MOD2mixed—623
MOD3mixed—623
MOD4mixed—623
RST OUTtrigger—623

Parameters 40

NameTypeRangeBehavior
CH1 Gate Lengthknob0 – 10623
CH1 Gate Probabilityknob—623
CH1 Gate Repeatknob2 – 8623
CH1 Modulationknob-10V – 10V623
CH1 Noteknob—Per-step CV/pitch value for channel 1; navigates through scale intervals, or cents in microtonal mode. Shift+rotate advances through octaves.623
CH1 Play Directionknob—Selects play direction for the channel: Forward, Backward, Ping-Pong, Ping-Pong with repeats on first and last step, or Random.623
CH1 Ratchetknob2 – 8623
CH1 Track Lengthmenu_setting2step – 64step623
CH2 Gate Lengthknob0 – 10623
CH2 Gate Probabilityknob—623
CH2 Gate Repeatknob2 – 8623
CH2 Modulationknob-10V – 10V623
CH2 Noteknob—623
CH2 Play Directionknob—623
CH2 Ratchetknob2 – 8623
CH2 Track Lengthmenu_setting2step – 64step623
CH3 Gate Lengthknob—623
CH3 Gate Probabilityknob—623
CH3 Gate Repeatknob2 – 8623
CH3 Modulationknob-10V – 10V623
CH3 Noteknob—623
CH3 Play Directionknob—623
CH3 Ratchetknob2 – 8623
CH3 Track Lengthmenu_setting2step – 64step623
CH4 Gate Lengthknob—623
CH4 Gate Probabilityknob—623
CH4 Gate Repeatknob2 – 8623
CH4 Modulationknob-10V – 10V623
CH4 Noteknob—623
CH4 Play Directionknob—623
CH4 Ratchetknob2 – 8623
CH4 Track Lengthmenu_setting2step – 64step623
Clock Out PPQmenu_setting—623
LFO Levelmenu_setting-5V – 5V623
Master Glideknob0s – 2s623
Master Track Lengthknob1step – 64step623
MIDI Note Offsetmenu_setting—623
Modulation Output Modemenu_setting—623
Pitch Bend Rangemenu_setting—623
Trigger Delayknob0ms – 40ms623

Firmware history 3 versions

VersionReleasedNotes
1.062023-03-10623
1.052022-01-03623
1.042021-05-12623

References 2

  1. [623]
    Erica Synths Black Sequencer Manual (March 2023, v2)manual
    source 623 canonical ↗ archived ↗
    ● verified 2026-05-21
  2. [624]
    Erica Synths Black Sequencer product pageproduct_page
    source 624 canonical ↗ archived ↗
    ● verified 2026-05-21